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1、,有余数,除法练习课,( 二年级下册), 328, 567, 459,下面哪一道题与众不同?,有余数, 294,直接写出商和余数。,325,194,478,507,抢答:括号里应该填几?,1,34,7,7 5,5 7,青蛙跳水,抢桃子,刨根问底,数珠子,划船过河,3 0,7,2 8,2,4,?,有一串珠子,其中有4颗绿珠子,那么各种颜色的的珠子一共有多少颗?,答:一共可以有16、17、18或19颗。,小猴子抢桃子,小猴子抢桃子,有余猴,没余猴,274,369,183,425,42,35,66,1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8
2、,9,1,2,3,4,5,6,7,8,9,2,余数 ,为什么叫:,“鱼数”、,“愚数”、,“愉数”?,是什么意思?,余粮、,“余”,余热、,余音、,余震 ,除法的,与余数的,“除”,“余”,耳刀旁儿,除法的,与余数的,“除”,“余”,耳刀旁儿,同学们去划船,每条船限乘5人。,三(1)班有17人,应租几条船?( ),三(2)班有23人,应租几条船?( ),4条,5条,两班共同租船,需要租几条?( ),8条,要求没有余数,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,要求没有余数,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,要求没有余数,要求有余数,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,要求没有余数,要求有余数,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,要求没有余数,要求有余数,要求余数尽可能大,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,总结,说一说你的收获?,